Water-cooled reversing-valve.



LA.' L. Knox. WATER COOLED R'EVERSING VALVE.

'(Applcation tiled Apr. 2, 1902.)

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Patented zsept. 9, |902'.-

. L. L. KNOX.

WATEl` CODLED REVERSING VALVE.

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No. 708,718. Patented Sept. 9, |902.'

L. L. Knox. WATER COOLED REVERSING VALVE.

(Application tiled Apr. 2, 1902.) (No Model.) 3 Sheets-Shee/S.

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LUTHER L. KNOX, OF PITTSBURG, PENNSYLVANIA.

WATER-COOLED REVERSING-VALVE.

.SPECIFICATION forming part .of Letters Patent No. 708,718, dated September 9, 1902.

' Application filed April 2,1902. Serial No. 101,135. (No model.)

To all whom it may concern:

Beit known that l, LUTHER L. Knox, of

Pittsburg, Allegheny county, Pennsylvania,

have invented a new and useful Water-Cooled Reversing-Valve, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specilication, in which- Figure 1 isa vertical centralsection through a valve system embodying my invention. Fig. 2 is a vertical cross-section of the same. Fig. is a top plan view, and Fig. 4. is a broken detail view, hereinafter referred to.

My invention relates to the reversing-valves used in connection with regenerative furnaces and is designed to provide a watercooled-valve system for thispurpose in which all the iron parts of the valves are protected by Water and in which there are no valvestems or mushroom-valves; also, to provide a valve system wherein the parts are open for inspection and can be easily reached for repairs.

In the drawings, 2 and 3 represent the gasports leading from the gas-regenerators, and 4: is a stack-flue between them. The air-regenerative ports 5 and 6 are similarly located alongside the gas-ports, and between the airports is the stack-flue 7. v

Referring to Fig. 1, 8 is an open-topped` water-tank resting upon and extending longitudinally beyond thev ports 2, 3,` and 4. Over each of these ports a hole is provided in the tank with a surrounding iange 9. A rectangular water-tank 10 rests within the tank 8 and contains a central box 11, having a closed top 12 below the level of the tank side, an open bottom portion inclosing two of the three ports. The tank 10 is narrower than tank 8, and its side and end edges dip within the water in tank 8. It is preferably provided with a set of baffle-plates 10, (shown in Fig. 4,) which give the Water a tortuous course from the supply to the exit end and also serve to stifen and strengthen the tankshell. Within the-end portions of the tank 10 are cylindrical fines 13, which are secured to recessed portions -14 of the tank-bottom, which are arranged to s eat upon the flanges 9 of the gas-ports. The flue-sections 13 project upwardly within depending i'lues 15, which extend from a common transverse iiue 16; The fines 15 and 16 are supported upon standards 17, having at their lower ends wheels 18, which travel upon the side fianges of the tank 8. The gas-ue 19 leads into the flue 16 from a vertical gas-Hue 20, supported upon the lower flue portion 2l, which extends up` through and is formed as a part of a tank 22. The tank 22 is carried upon wheels 23, traveling upon the side flanges of a stationary tank 24, throngh which the gas-supply port 25l leads. To control the flow of gas from the flue 2O through the flue 19, I provide a cylindrical receptacle `26, having a closed bottom with a depending annular iiange 27, which dips into a water-sealing trough 28 within the vertical flue. A depending shell 29 extends down from the closed top 30 of the vertical flue into the water within the receptacle 26, thus allowing the valve to be moved vertically by means of its stem 31, while providing an efficient water-cooling and watersealing system therefor.

The box 11 is provided with a damper 32, which extends down into the water seal between the ports and projects upwardly through a pocket 33 in the top of the box. The pocket is surrounded by a Water-sealing trough 34, into which the depending anges 35, secured to the projecting upper end of the damper, depend. The damper may thus be 'adjusted to different heights, While its upward-projecting portion is constantly watersealed, and the flow of gases to the stack is thus controlled.

When the ports are in the position shown in Fig. 1, the damper 32 is lifted and the waste gases from the furnace pass upwardly through the iiue 2 into the box 11, and thence ilow under the damper 32 into the stack-flue 4. At the same time gas is supplied through the iiues 20, 19, 16, and 15 to the flue 3, and thence to the other gas-regenerator. To shift the valvev from the position of Fig. 1 to the reverse position, I pivot to each side of the tank 10 a series of links 36, Whose lower ends `are pivoted in bearings37 on the side of the ilues, and the double-acting motive cylinder 38, pivoted in bearings 39, isprovided, the piston-rod 40 of this cylinder having a loose connection 41 with one end of the tank 10. When iiuid is admitted to force out the piston of this cylinder, the tank 13 will swing IOO upwardly and forwardly through an arcshaped path into position where the ports 3 and 4t are connected through the inner box, while the port 2 is connected with the opposite down-flue 15. In this position the ports are all water-sealed, as before. During this movement of the tank 10 the iuesections 13 telescope within the Hues 15, while the entire flue structure 15, 16, 19, and 2O travels longitudinally on the supporting-wheels without rising.

The valve system for the air-regenerators is similar to that above described, the parts beingtdesignated by similar numerals with the prime-mark. In this case the gas-connecting flue structure is dispensed with, and the ports 13 may be provided with verticallymovable covers or valves 42 to control the inlet of air to the air-regenerator. l

The advantages of my invention will be obvious to those skilled in this art. The use of mushroom-valves is done away with, all the joints and metal parts are thoroughly watercooled, and no valve-stems are used. The system is com paratively simple, the tanks are open for inspection, and all parts are easily accessible for repair.

Many changes maybe made in the form and arrangement of the apparatus, which may be used for a single set of regenerators instead of a double set, as shown.

I claim- 1. A water-cooled reversing-valve comprising a stationary tank, ports extending up through the tank, a second tank resting within the stationary tank and containing ports extending up through it, and mechanism for shifting the second tank; substantially as described.

2. A water-cooled reversing-valve, comprising a tank, three ports extending up through the tank, a movable tank resting within the stationary tank, and containing a passage arranged to connect two of the ports, said movable tank having a third port leading up through it and arranged to connect with the third port, and mechanism for shifting the movable tank; substantially as described.

3. A water-cooled reversing-val ve, comprising a tank, a series of at least three flanged ports extending upwardly through the tank, a movable tank resting within the stationary tank and having its bottom provided with an inverted box or channel arranged to connect two of the ports, a shell extending up through the movable tank and arranged to connect with another port, and mechanism for lifting the movable tank and shifting it longitudinally; substantially as described.

4. Awater-cooled reversing-valve comprising a stationary tank having three lues extending upwardly through it, a movable tank supported in the stationary tank and containing a channel arranged to connect two of the ports, vertical flue connections extending through the end portions of the movable tank, a gaseous'supply Hue connecting to the end iiue portions of the tank, and mechanism for shifting the movable tank longitudinally; substantially as described.

5. Awater-cooled reversing-valve comprising a stationary water-tank having ilues extending upwardly through it, a movable water-containing tank resting within the stationary tank and containing a connectingflue, and an end flue, pivotal links connected to the movable tank and mechanism for shifting said movable tank longitudinally; substantially as described.

o'. A water-cooled reversing-valve comprising a stationary tank with ports opening through it, a movable tank resting therein with a connecting-hue, awater-sealed damper within said flue, and mechanism for shifting the movable tank; substantially as described.

7. A water-cooled reversinggas-valve, consisting of vertically-extending gas-lines, a tank surrounding their upper ends, a movable tank within the stationary tank and having a port leading upwardly through it, said movable tank having a horizontal connectingpassage, and mechanism for shifting the movable tank horizontally in a vertical plane; substantially as described.

8. A vertical cylindrical supply-flue having an internal annular Water seal, a vertically-movable tank within the fine having a depending flange within the water seal, an upper depending shell extending downwardly within the tank, and connections for moving the tank vertically; substantially as described.

9. A water-cooled reversing-valve comprising a tank, three ports extending up through the tank, a movable tank within the stationary tank and containing a passage arranged to connect two of the ports, said movable tank having end ports leading upwardly through it, mechanism for shifting the movable tank longitudinally in a vertical plane, and a gas-supply fine in constant connection with the end ports of said movable tank; substantially as described.

10. A water-cooled reversing-valve comprising a stationary tank with ports extending through it, a movable tank resting within the stationary tank and containing a conneoting flue, said movable tank having a third port extending upwardly through it, and mechanism for shifting the movable tank longitudinally in a vertical plane; substantially as described.

In testimony whereof I have hereunto Set my hand.

L. L. KNOX.

Vitn'esses:

GEO. B. BLEMING, L. M. REDMAN.

IIO 

